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linux/drivers/media/video/cx88/cx88-tvaudio.c
Rafael J. Wysocki 8314418629 Freezer: make kernel threads nonfreezable by default 
Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00

954 lines
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C
Raw Blame History

/*
cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver
(c) 2001 Michael Eskin, Tom Zakrajsek [Windows version]
(c) 2002 Yurij Sysoev <yurij@naturesoft.net>
(c) 2003 Gerd Knorr <kraxel@bytesex.org>
-----------------------------------------------------------------------
Lot of voodoo here. Even the data sheet doesn't help to
understand what is going on here, the documentation for the audio
part of the cx2388x chip is *very* bad.
Some of this comes from party done linux driver sources I got from
[undocumented].
Some comes from the dscaler sources, one of the dscaler driver guy works
for Conexant ...
-----------------------------------------------------------------------
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/freezer.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/poll.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include "cx88.h"
static unsigned int audio_debug = 0;
module_param(audio_debug, int, 0644);
MODULE_PARM_DESC(audio_debug, "enable debug messages [audio]");
static unsigned int always_analog = 0;
module_param(always_analog,int,0644);
MODULE_PARM_DESC(always_analog,"force analog audio out");
#define dprintk(fmt, arg...) if (audio_debug) \
printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
/* ----------------------------------------------------------- */
static char *aud_ctl_names[64] = {
[EN_BTSC_FORCE_MONO] = "BTSC_FORCE_MONO",
[EN_BTSC_FORCE_STEREO] = "BTSC_FORCE_STEREO",
[EN_BTSC_FORCE_SAP] = "BTSC_FORCE_SAP",
[EN_BTSC_AUTO_STEREO] = "BTSC_AUTO_STEREO",
[EN_BTSC_AUTO_SAP] = "BTSC_AUTO_SAP",
[EN_A2_FORCE_MONO1] = "A2_FORCE_MONO1",
[EN_A2_FORCE_MONO2] = "A2_FORCE_MONO2",
[EN_A2_FORCE_STEREO] = "A2_FORCE_STEREO",
[EN_A2_AUTO_MONO2] = "A2_AUTO_MONO2",
[EN_A2_AUTO_STEREO] = "A2_AUTO_STEREO",
[EN_EIAJ_FORCE_MONO1] = "EIAJ_FORCE_MONO1",
[EN_EIAJ_FORCE_MONO2] = "EIAJ_FORCE_MONO2",
[EN_EIAJ_FORCE_STEREO] = "EIAJ_FORCE_STEREO",
[EN_EIAJ_AUTO_MONO2] = "EIAJ_AUTO_MONO2",
[EN_EIAJ_AUTO_STEREO] = "EIAJ_AUTO_STEREO",
[EN_NICAM_FORCE_MONO1] = "NICAM_FORCE_MONO1",
[EN_NICAM_FORCE_MONO2] = "NICAM_FORCE_MONO2",
[EN_NICAM_FORCE_STEREO] = "NICAM_FORCE_STEREO",
[EN_NICAM_AUTO_MONO2] = "NICAM_AUTO_MONO2",
[EN_NICAM_AUTO_STEREO] = "NICAM_AUTO_STEREO",
[EN_FMRADIO_FORCE_MONO] = "FMRADIO_FORCE_MONO",
[EN_FMRADIO_FORCE_STEREO] = "FMRADIO_FORCE_STEREO",
[EN_FMRADIO_AUTO_STEREO] = "FMRADIO_AUTO_STEREO",
};
struct rlist {
u32 reg;
u32 val;
};
static void set_audio_registers(struct cx88_core *core, const struct rlist *l)
{
int i;
for (i = 0; l[i].reg; i++) {
switch (l[i].reg) {
case AUD_PDF_DDS_CNST_BYTE2:
case AUD_PDF_DDS_CNST_BYTE1:
case AUD_PDF_DDS_CNST_BYTE0:
case AUD_QAM_MODE:
case AUD_PHACC_FREQ_8MSB:
case AUD_PHACC_FREQ_8LSB:
cx_writeb(l[i].reg, l[i].val);
break;
default:
cx_write(l[i].reg, l[i].val);
break;
}
}
}
static void set_audio_start(struct cx88_core *core, u32 mode)
{
/* mute */
cx_write(AUD_VOL_CTL, (1 << 6));
/* start programming */
cx_write(AUD_INIT, mode);
cx_write(AUD_INIT_LD, 0x0001);
cx_write(AUD_SOFT_RESET, 0x0001);
}
static void set_audio_finish(struct cx88_core *core, u32 ctl)
{
u32 volume;
/* restart dma; This avoids buzz in NICAM and is good in others */
cx88_stop_audio_dma(core);
cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
cx88_start_audio_dma(core);
if (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) {
cx_write(AUD_I2SINPUTCNTL, 4);
cx_write(AUD_BAUDRATE, 1);
/* 'pass-thru mode': this enables the i2s output to the mpeg encoder */
cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
cx_write(AUD_I2SOUTPUTCNTL, 1);
cx_write(AUD_I2SCNTL, 0);
/* cx_write(AUD_APB_IN_RATE_ADJ, 0); */
}
if ((always_analog) || (!(cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD))) {
ctl |= EN_DAC_ENABLE;
cx_write(AUD_CTL, ctl);
}
/* finish programming */
cx_write(AUD_SOFT_RESET, 0x0000);
/* unmute */
volume = cx_sread(SHADOW_AUD_VOL_CTL);
cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
}
/* ----------------------------------------------------------- */
static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap,
u32 mode)
{
static const struct rlist btsc[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_OUT1_SEL, 0x00000013},
{AUD_OUT1_SHIFT, 0x00000000},
{AUD_POLY0_DDS_CONSTANT, 0x0012010c},
{AUD_DMD_RA_DDS, 0x00c3e7aa},
{AUD_DBX_IN_GAIN, 0x00004734},
{AUD_DBX_WBE_GAIN, 0x00004640},
{AUD_DBX_SE_GAIN, 0x00008d31},
{AUD_DCOC_0_SRC, 0x0000001a},
{AUD_IIR1_4_SEL, 0x00000021},
{AUD_DCOC_PASS_IN, 0x00000003},
{AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_0_SHIFT_IN1, 0x00000008},
{AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_1_SHIFT_IN1, 0x00000008},
{AUD_DN0_FREQ, 0x0000283b},
{AUD_DN2_SRC_SEL, 0x00000008},
{AUD_DN2_FREQ, 0x00003000},
{AUD_DN2_AFC, 0x00000002},
{AUD_DN2_SHFT, 0x00000000},
{AUD_IIR2_2_SEL, 0x00000020},
{AUD_IIR2_2_SHIFT, 0x00000000},
{AUD_IIR2_3_SEL, 0x0000001f},
{AUD_IIR2_3_SHIFT, 0x00000000},
{AUD_CRDC1_SRC_SEL, 0x000003ce},
{AUD_CRDC1_SHIFT, 0x00000000},
{AUD_CORDIC_SHIFT_1, 0x00000007},
{AUD_DCOC_1_SRC, 0x0000001b},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_RDSI_SEL, 0x00000008},
{AUD_RDSQ_SEL, 0x00000008},
{AUD_RDSI_SHIFT, 0x00000000},
{AUD_RDSQ_SHIFT, 0x00000000},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{ /* end of list */ },
};
static const struct rlist btsc_sap[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_DBX_IN_GAIN, 0x00007200},
{AUD_DBX_WBE_GAIN, 0x00006200},
{AUD_DBX_SE_GAIN, 0x00006200},
{AUD_IIR1_1_SEL, 0x00000000},
{AUD_IIR1_3_SEL, 0x00000001},
{AUD_DN1_SRC_SEL, 0x00000007},
{AUD_IIR1_4_SHIFT, 0x00000006},
{AUD_IIR2_1_SHIFT, 0x00000000},
{AUD_IIR2_2_SHIFT, 0x00000000},
{AUD_IIR3_0_SHIFT, 0x00000000},
{AUD_IIR3_1_SHIFT, 0x00000000},
{AUD_IIR3_0_SEL, 0x0000000d},
{AUD_IIR3_1_SEL, 0x0000000e},
{AUD_DEEMPH1_SRC_SEL, 0x00000014},
{AUD_DEEMPH1_SHIFT, 0x00000000},
{AUD_DEEMPH1_G0, 0x00004000},
{AUD_DEEMPH1_A0, 0x00000000},
{AUD_DEEMPH1_B0, 0x00000000},
{AUD_DEEMPH1_A1, 0x00000000},
{AUD_DEEMPH1_B1, 0x00000000},
{AUD_OUT0_SEL, 0x0000003f},
{AUD_OUT1_SEL, 0x0000003f},
{AUD_DN1_AFC, 0x00000002},
{AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_0_SHIFT_IN1, 0x00000008},
{AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_1_SHIFT_IN1, 0x00000008},
{AUD_IIR1_0_SEL, 0x0000001d},
{AUD_IIR1_2_SEL, 0x0000001e},
{AUD_IIR2_1_SEL, 0x00000002},
{AUD_IIR2_2_SEL, 0x00000004},
{AUD_IIR3_2_SEL, 0x0000000f},
{AUD_DCOC2_SHIFT, 0x00000001},
{AUD_IIR3_2_SHIFT, 0x00000001},
{AUD_DEEMPH0_SRC_SEL, 0x00000014},
{AUD_CORDIC_SHIFT_1, 0x00000006},
{AUD_POLY0_DDS_CONSTANT, 0x000e4db2},
{AUD_DMD_RA_DDS, 0x00f696e6},
{AUD_IIR2_3_SEL, 0x00000025},
{AUD_IIR1_4_SEL, 0x00000021},
{AUD_DN1_FREQ, 0x0000c965},
{AUD_DCOC_PASS_IN, 0x00000003},
{AUD_DCOC_0_SRC, 0x0000001a},
{AUD_DCOC_1_SRC, 0x0000001b},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_RDSI_SEL, 0x00000009},
{AUD_RDSQ_SEL, 0x00000009},
{AUD_RDSI_SHIFT, 0x00000000},
{AUD_RDSQ_SHIFT, 0x00000000},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{ /* end of list */ },
};
mode |= EN_FMRADIO_EN_RDS;
if (sap) {
dprintk("%s SAP (status: unknown)\n", __FUNCTION__);
set_audio_start(core, SEL_SAP);
set_audio_registers(core, btsc_sap);
set_audio_finish(core, mode);
} else {
dprintk("%s (status: known-good)\n", __FUNCTION__);
set_audio_start(core, SEL_BTSC);
set_audio_registers(core, btsc);
set_audio_finish(core, mode);
}
}
static void set_audio_standard_NICAM(struct cx88_core *core, u32 mode)
{
static const struct rlist nicam_l[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_RATE_ADJ1, 0x00000060},
{AUD_RATE_ADJ2, 0x000000F9},
{AUD_RATE_ADJ3, 0x000001CC},
{AUD_RATE_ADJ4, 0x000002B3},
{AUD_RATE_ADJ5, 0x00000726},
{AUD_DEEMPHDENOM1_R, 0x0000F3D0},
{AUD_DEEMPHDENOM2_R, 0x00000000},
{AUD_ERRLOGPERIOD_R, 0x00000064},
{AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
{AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{AUD_DMD_RA_DDS, 0x00C00000},
{AUD_PLL_INT, 0x0000001E},
{AUD_PLL_DDS, 0x00000000},
{AUD_PLL_FRAC, 0x0000E542},
{AUD_START_TIMER, 0x00000000},
{AUD_DEEMPHNUMER1_R, 0x000353DE},
{AUD_DEEMPHNUMER2_R, 0x000001B1},
{AUD_PDF_DDS_CNST_BYTE2, 0x06},
{AUD_PDF_DDS_CNST_BYTE1, 0x82},
{AUD_PDF_DDS_CNST_BYTE0, 0x12},
{AUD_QAM_MODE, 0x05},
{AUD_PHACC_FREQ_8MSB, 0x34},
{AUD_PHACC_FREQ_8LSB, 0x4C},
{AUD_DEEMPHGAIN_R, 0x00006680},
{AUD_RATE_THRES_DMD, 0x000000C0},
{ /* end of list */ },
};
static const struct rlist nicam_bgdki_common[] = {
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_RATE_ADJ1, 0x00000010},
{AUD_RATE_ADJ2, 0x00000040},
{AUD_RATE_ADJ3, 0x00000100},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00001000},
{AUD_ERRLOGPERIOD_R, 0x00000fff},
{AUD_ERRINTRPTTHSHLD1_R, 0x000003ff},
{AUD_ERRINTRPTTHSHLD2_R, 0x000000ff},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000003f},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{AUD_DEEMPHGAIN_R, 0x000023c2},
{AUD_DEEMPHNUMER1_R, 0x0002a7bc},
{AUD_DEEMPHNUMER2_R, 0x0003023e},
{AUD_DEEMPHDENOM1_R, 0x0000f3d0},
{AUD_DEEMPHDENOM2_R, 0x00000000},
{AUD_PDF_DDS_CNST_BYTE2, 0x06},
{AUD_PDF_DDS_CNST_BYTE1, 0x82},
{AUD_QAM_MODE, 0x05},
{ /* end of list */ },
};
static const struct rlist nicam_i[] = {
{AUD_PDF_DDS_CNST_BYTE0, 0x12},
{AUD_PHACC_FREQ_8MSB, 0x3a},
{AUD_PHACC_FREQ_8LSB, 0x93},
{ /* end of list */ },
};
static const struct rlist nicam_default[] = {
{AUD_PDF_DDS_CNST_BYTE0, 0x16},
{AUD_PHACC_FREQ_8MSB, 0x34},
{AUD_PHACC_FREQ_8LSB, 0x4c},
{ /* end of list */ },
};
set_audio_start(core,SEL_NICAM);
switch (core->tvaudio) {
case WW_L:
dprintk("%s SECAM-L NICAM (status: devel)\n", __FUNCTION__);
set_audio_registers(core, nicam_l);
break;
case WW_I:
dprintk("%s PAL-I NICAM (status: known-good)\n", __FUNCTION__);
set_audio_registers(core, nicam_bgdki_common);
set_audio_registers(core, nicam_i);
break;
default:
dprintk("%s PAL-BGDK NICAM (status: known-good)\n", __FUNCTION__);
set_audio_registers(core, nicam_bgdki_common);
set_audio_registers(core, nicam_default);
break;
};
mode |= EN_DMTRX_LR | EN_DMTRX_BYPASS;
set_audio_finish(core, mode);
}
static void set_audio_standard_A2(struct cx88_core *core, u32 mode)
{
static const struct rlist a2_bgdk_common[] = {
{AUD_ERRLOGPERIOD_R, 0x00000064},
{AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
{AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
{AUD_PDF_DDS_CNST_BYTE2, 0x06},
{AUD_PDF_DDS_CNST_BYTE1, 0x82},
{AUD_PDF_DDS_CNST_BYTE0, 0x12},
{AUD_QAM_MODE, 0x05},
{AUD_PHACC_FREQ_8MSB, 0x34},
{AUD_PHACC_FREQ_8LSB, 0x4c},
{AUD_RATE_ADJ1, 0x00000100},
{AUD_RATE_ADJ2, 0x00000200},
{AUD_RATE_ADJ3, 0x00000300},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00000500},
{AUD_THR_FR, 0x00000000},
{AAGC_HYST, 0x0000001a},
{AUD_PILOT_BQD_1_K0, 0x0000755b},
{AUD_PILOT_BQD_1_K1, 0x00551340},
{AUD_PILOT_BQD_1_K2, 0x006d30be},
{AUD_PILOT_BQD_1_K3, 0xffd394af},
{AUD_PILOT_BQD_1_K4, 0x00400000},
{AUD_PILOT_BQD_2_K0, 0x00040000},
{AUD_PILOT_BQD_2_K1, 0x002a4841},
{AUD_PILOT_BQD_2_K2, 0x00400000},
{AUD_PILOT_BQD_2_K3, 0x00000000},
{AUD_PILOT_BQD_2_K4, 0x00000000},
{AUD_MODE_CHG_TIMER, 0x00000040},
{AUD_AFE_12DB_EN, 0x00000001},
{AUD_CORDIC_SHIFT_0, 0x00000007},
{AUD_CORDIC_SHIFT_1, 0x00000007},
{AUD_DEEMPH0_G0, 0x00000380},
{AUD_DEEMPH1_G0, 0x00000380},
{AUD_DCOC_0_SRC, 0x0000001a},
{AUD_DCOC0_SHIFT, 0x00000000},
{AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_0_SHIFT_IN1, 0x00000008},
{AUD_DCOC_PASS_IN, 0x00000003},
{AUD_IIR3_0_SEL, 0x00000021},
{AUD_DN2_AFC, 0x00000002},
{AUD_DCOC_1_SRC, 0x0000001b},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_1_SHIFT_IN1, 0x00000008},
{AUD_IIR3_1_SEL, 0x00000023},
{AUD_RDSI_SEL, 0x00000017},
{AUD_RDSI_SHIFT, 0x00000000},
{AUD_RDSQ_SEL, 0x00000017},
{AUD_RDSQ_SHIFT, 0x00000000},
{AUD_PLL_INT, 0x0000001e},
{AUD_PLL_DDS, 0x00000000},
{AUD_PLL_FRAC, 0x0000e542},
{AUD_POLYPH80SCALEFAC, 0x00000001},
{AUD_START_TIMER, 0x00000000},
{ /* end of list */ },
};
static const struct rlist a2_bg[] = {
{AUD_DMD_RA_DDS, 0x002a4f2f},
{AUD_C1_UP_THR, 0x00007000},
{AUD_C1_LO_THR, 0x00005400},
{AUD_C2_UP_THR, 0x00005400},
{AUD_C2_LO_THR, 0x00003000},
{ /* end of list */ },
};
static const struct rlist a2_dk[] = {
{AUD_DMD_RA_DDS, 0x002a4f2f},
{AUD_C1_UP_THR, 0x00007000},
{AUD_C1_LO_THR, 0x00005400},
{AUD_C2_UP_THR, 0x00005400},
{AUD_C2_LO_THR, 0x00003000},
{AUD_DN0_FREQ, 0x00003a1c},
{AUD_DN2_FREQ, 0x0000d2e0},
{ /* end of list */ },
};
static const struct rlist a1_i[] = {
{AUD_ERRLOGPERIOD_R, 0x00000064},
{AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
{AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
{AUD_PDF_DDS_CNST_BYTE2, 0x06},
{AUD_PDF_DDS_CNST_BYTE1, 0x82},
{AUD_PDF_DDS_CNST_BYTE0, 0x12},
{AUD_QAM_MODE, 0x05},
{AUD_PHACC_FREQ_8MSB, 0x3a},
{AUD_PHACC_FREQ_8LSB, 0x93},
{AUD_DMD_RA_DDS, 0x002a4f2f},
{AUD_PLL_INT, 0x0000001e},
{AUD_PLL_DDS, 0x00000004},
{AUD_PLL_FRAC, 0x0000e542},
{AUD_RATE_ADJ1, 0x00000100},
{AUD_RATE_ADJ2, 0x00000200},
{AUD_RATE_ADJ3, 0x00000300},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00000500},
{AUD_THR_FR, 0x00000000},
{AUD_PILOT_BQD_1_K0, 0x0000755b},
{AUD_PILOT_BQD_1_K1, 0x00551340},
{AUD_PILOT_BQD_1_K2, 0x006d30be},
{AUD_PILOT_BQD_1_K3, 0xffd394af},
{AUD_PILOT_BQD_1_K4, 0x00400000},
{AUD_PILOT_BQD_2_K0, 0x00040000},
{AUD_PILOT_BQD_2_K1, 0x002a4841},
{AUD_PILOT_BQD_2_K2, 0x00400000},
{AUD_PILOT_BQD_2_K3, 0x00000000},
{AUD_PILOT_BQD_2_K4, 0x00000000},
{AUD_MODE_CHG_TIMER, 0x00000060},
{AUD_AFE_12DB_EN, 0x00000001},
{AAGC_HYST, 0x0000000a},
{AUD_CORDIC_SHIFT_0, 0x00000007},
{AUD_CORDIC_SHIFT_1, 0x00000007},
{AUD_C1_UP_THR, 0x00007000},
{AUD_C1_LO_THR, 0x00005400},
{AUD_C2_UP_THR, 0x00005400},
{AUD_C2_LO_THR, 0x00003000},
{AUD_DCOC_0_SRC, 0x0000001a},
{AUD_DCOC0_SHIFT, 0x00000000},
{AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_0_SHIFT_IN1, 0x00000008},
{AUD_DCOC_PASS_IN, 0x00000003},
{AUD_IIR3_0_SEL, 0x00000021},
{AUD_DN2_AFC, 0x00000002},
{AUD_DCOC_1_SRC, 0x0000001b},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
{AUD_DCOC_1_SHIFT_IN1, 0x00000008},
{AUD_IIR3_1_SEL, 0x00000023},
{AUD_DN0_FREQ, 0x000035a3},
{AUD_DN2_FREQ, 0x000029c7},
{AUD_CRDC0_SRC_SEL, 0x00000511},
{AUD_IIR1_0_SEL, 0x00000001},
{AUD_IIR1_1_SEL, 0x00000000},
{AUD_IIR3_2_SEL, 0x00000003},
{AUD_IIR3_2_SHIFT, 0x00000000},
{AUD_IIR3_0_SEL, 0x00000002},
{AUD_IIR2_0_SEL, 0x00000021},
{AUD_IIR2_0_SHIFT, 0x00000002},
{AUD_DEEMPH0_SRC_SEL, 0x0000000b},
{AUD_DEEMPH1_SRC_SEL, 0x0000000b},
{AUD_POLYPH80SCALEFAC, 0x00000001},
{AUD_START_TIMER, 0x00000000},
{ /* end of list */ },
};
static const struct rlist am_l[] = {
{AUD_ERRLOGPERIOD_R, 0x00000064},
{AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
{AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
{AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
{AUD_PDF_DDS_CNST_BYTE2, 0x48},
{AUD_PDF_DDS_CNST_BYTE1, 0x3D},
{AUD_QAM_MODE, 0x00},
{AUD_PDF_DDS_CNST_BYTE0, 0xf5},
{AUD_PHACC_FREQ_8MSB, 0x3a},
{AUD_PHACC_FREQ_8LSB, 0x4a},
{AUD_DEEMPHGAIN_R, 0x00006680},
{AUD_DEEMPHNUMER1_R, 0x000353DE},
{AUD_DEEMPHNUMER2_R, 0x000001B1},
{AUD_DEEMPHDENOM1_R, 0x0000F3D0},
{AUD_DEEMPHDENOM2_R, 0x00000000},
{AUD_FM_MODE_ENABLE, 0x00000007},
{AUD_POLYPH80SCALEFAC, 0x00000003},
{AUD_AFE_12DB_EN, 0x00000001},
{AAGC_GAIN, 0x00000000},
{AAGC_HYST, 0x00000018},
{AAGC_DEF, 0x00000020},
{AUD_DN0_FREQ, 0x00000000},
{AUD_POLY0_DDS_CONSTANT, 0x000E4DB2},
{AUD_DCOC_0_SRC, 0x00000021},
{AUD_IIR1_0_SEL, 0x00000000},
{AUD_IIR1_0_SHIFT, 0x00000007},
{AUD_IIR1_1_SEL, 0x00000002},
{AUD_IIR1_1_SHIFT, 0x00000000},
{AUD_DCOC_1_SRC, 0x00000003},
{AUD_DCOC1_SHIFT, 0x00000000},
{AUD_DCOC_PASS_IN, 0x00000000},
{AUD_IIR1_2_SEL, 0x00000023},
{AUD_IIR1_2_SHIFT, 0x00000000},
{AUD_IIR1_3_SEL, 0x00000004},
{AUD_IIR1_3_SHIFT, 0x00000007},
{AUD_IIR1_4_SEL, 0x00000005},
{AUD_IIR1_4_SHIFT, 0x00000007},
{AUD_IIR3_0_SEL, 0x00000007},
{AUD_IIR3_0_SHIFT, 0x00000000},
{AUD_DEEMPH0_SRC_SEL, 0x00000011},
{AUD_DEEMPH0_SHIFT, 0x00000000},
{AUD_DEEMPH0_G0, 0x00007000},
{AUD_DEEMPH0_A0, 0x00000000},
{AUD_DEEMPH0_B0, 0x00000000},
{AUD_DEEMPH0_A1, 0x00000000},
{AUD_DEEMPH0_B1, 0x00000000},
{AUD_DEEMPH1_SRC_SEL, 0x00000011},
{AUD_DEEMPH1_SHIFT, 0x00000000},
{AUD_DEEMPH1_G0, 0x00007000},
{AUD_DEEMPH1_A0, 0x00000000},
{AUD_DEEMPH1_B0, 0x00000000},
{AUD_DEEMPH1_A1, 0x00000000},
{AUD_DEEMPH1_B1, 0x00000000},
{AUD_OUT0_SEL, 0x0000003F},
{AUD_OUT1_SEL, 0x0000003F},
{AUD_DMD_RA_DDS, 0x00F5C285},
{AUD_PLL_INT, 0x0000001E},
{AUD_PLL_DDS, 0x00000000},
{AUD_PLL_FRAC, 0x0000E542},
{AUD_RATE_ADJ1, 0x00000100},
{AUD_RATE_ADJ2, 0x00000200},
{AUD_RATE_ADJ3, 0x00000300},
{AUD_RATE_ADJ4, 0x00000400},
{AUD_RATE_ADJ5, 0x00000500},
{AUD_RATE_THRES_DMD, 0x000000C0},
{ /* end of list */ },
};
static const struct rlist a2_deemph50[] = {
{AUD_DEEMPH0_G0, 0x00000380},
{AUD_DEEMPH1_G0, 0x00000380},
{AUD_DEEMPHGAIN_R, 0x000011e1},
{AUD_DEEMPHNUMER1_R, 0x0002a7bc},
{AUD_DEEMPHNUMER2_R, 0x0003023c},
{ /* end of list */ },
};
set_audio_start(core, SEL_A2);
switch (core->tvaudio) {
case WW_BG:
dprintk("%s PAL-BG A1/2 (status: known-good)\n", __FUNCTION__);
set_audio_registers(core, a2_bgdk_common);
set_audio_registers(core, a2_bg);
set_audio_registers(core, a2_deemph50);
break;
case WW_DK:
dprintk("%s PAL-DK A1/2 (status: known-good)\n", __FUNCTION__);
set_audio_registers(core, a2_bgdk_common);
set_audio_registers(core, a2_dk);
set_audio_registers(core, a2_deemph50);
break;
case WW_I:
dprintk("%s PAL-I A1 (status: known-good)\n", __FUNCTION__);
set_audio_registers(core, a1_i);
set_audio_registers(core, a2_deemph50);
break;
case WW_L:
dprintk("%s AM-L (status: devel)\n", __FUNCTION__);
set_audio_registers(core, am_l);
break;
default:
dprintk("%s Warning: wrong value\n", __FUNCTION__);
return;
break;
};
mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF;
set_audio_finish(core, mode);
}
static void set_audio_standard_EIAJ(struct cx88_core *core)
{
static const struct rlist eiaj[] = {
/* TODO: eiaj register settings are not there yet ... */
{ /* end of list */ },
};
dprintk("%s (status: unknown)\n", __FUNCTION__);
set_audio_start(core, SEL_EIAJ);
set_audio_registers(core, eiaj);
set_audio_finish(core, EN_EIAJ_AUTO_STEREO);
}
static void set_audio_standard_FM(struct cx88_core *core,
enum cx88_deemph_type deemph)
{
static const struct rlist fm_deemph_50[] = {
{AUD_DEEMPH0_G0, 0x0C45},
{AUD_DEEMPH0_A0, 0x6262},
{AUD_DEEMPH0_B0, 0x1C29},
{AUD_DEEMPH0_A1, 0x3FC66},
{AUD_DEEMPH0_B1, 0x399A},
{AUD_DEEMPH1_G0, 0x0D80},
{AUD_DEEMPH1_A0, 0x6262},
{AUD_DEEMPH1_B0, 0x1C29},
{AUD_DEEMPH1_A1, 0x3FC66},
{AUD_DEEMPH1_B1, 0x399A},
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
static const struct rlist fm_deemph_75[] = {
{AUD_DEEMPH0_G0, 0x091B},
{AUD_DEEMPH0_A0, 0x6B68},
{AUD_DEEMPH0_B0, 0x11EC},
{AUD_DEEMPH0_A1, 0x3FC66},
{AUD_DEEMPH0_B1, 0x399A},
{AUD_DEEMPH1_G0, 0x0AA0},
{AUD_DEEMPH1_A0, 0x6B68},
{AUD_DEEMPH1_B0, 0x11EC},
{AUD_DEEMPH1_A1, 0x3FC66},
{AUD_DEEMPH1_B1, 0x399A},
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
/* It is enough to leave default values? */
static const struct rlist fm_no_deemph[] = {
{AUD_POLYPH80SCALEFAC, 0x0003},
{ /* end of list */ },
};
dprintk("%s (status: unknown)\n", __FUNCTION__);
set_audio_start(core, SEL_FMRADIO);
switch (deemph) {
case FM_NO_DEEMPH:
set_audio_registers(core, fm_no_deemph);
break;
case FM_DEEMPH_50:
set_audio_registers(core, fm_deemph_50);
break;
case FM_DEEMPH_75:
set_audio_registers(core, fm_deemph_75);
break;
}
set_audio_finish(core, EN_FMRADIO_AUTO_STEREO);
}
/* ----------------------------------------------------------- */
static int cx88_detect_nicam(struct cx88_core *core)
{
int i, j = 0;
dprintk("start nicam autodetect.\n");
for (i = 0; i < 6; i++) {
/* if bit1=1 then nicam is detected */
j += ((cx_read(AUD_NICAM_STATUS2) & 0x02) >> 1);
if (j == 1) {
dprintk("nicam is detected.\n");
return 1;
}
/* wait a little bit for next reading status */
msleep(10);
}
dprintk("nicam is not detected.\n");
return 0;
}
void cx88_set_tvaudio(struct cx88_core *core)
{
switch (core->tvaudio) {
case WW_BTSC:
set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
break;
case WW_BG:
case WW_DK:
case WW_I:
case WW_L:
/* prepare all dsp registers */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
/* set nicam mode - otherwise
AUD_NICAM_STATUS2 contains wrong values */
set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO);
if (0 == cx88_detect_nicam(core)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
core->use_nicam = 0;
} else {
core->use_nicam = 1;
}
break;
case WW_EIAJ:
set_audio_standard_EIAJ(core);
break;
case WW_FM:
set_audio_standard_FM(core, FM_NO_DEEMPH);
break;
case WW_NONE:
default:
printk("%s/0: unknown tv audio mode [%d]\n",
core->name, core->tvaudio);
break;
}
return;
}
void cx88_newstation(struct cx88_core *core)
{
core->audiomode_manual = UNSET;
}
void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
{
static char *m[] = { "stereo", "dual mono", "mono", "sap" };
static char *p[] = { "no pilot", "pilot c1", "pilot c2", "?" };
u32 reg, mode, pilot;
reg = cx_read(AUD_STATUS);
mode = reg & 0x03;
pilot = (reg >> 2) & 0x03;
if (core->astat != reg)
dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
reg, m[mode], p[pilot],
aud_ctl_names[cx_read(AUD_CTL) & 63]);
core->astat = reg;
/* TODO
Reading from AUD_STATUS is not enough
for auto-detecting sap/dual-fm/nicam.
Add some code here later.
*/
return;
}
void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
{
u32 ctl = UNSET;
u32 mask = UNSET;
if (manual) {
core->audiomode_manual = mode;
} else {
if (UNSET != core->audiomode_manual)
return;
}
core->audiomode_current = mode;
switch (core->tvaudio) {
case WW_BTSC:
switch (mode) {
case V4L2_TUNER_MODE_MONO:
set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_MONO);
break;
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_BTSC(core, 1, EN_BTSC_FORCE_SAP);
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_STEREO);
break;
}
break;
case WW_BG:
case WW_DK:
case WW_I:
case WW_L:
if (1 == core->use_nicam) {
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_MONO1);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_MONO2);
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
set_audio_standard_NICAM(core,
EN_NICAM_FORCE_STEREO);
break;
}
} else {
if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
} else {
/* TODO: Add A2 autodection */
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
set_audio_standard_A2(core,
EN_A2_FORCE_MONO1);
break;
case V4L2_TUNER_MODE_LANG2:
set_audio_standard_A2(core,
EN_A2_FORCE_MONO2);
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
set_audio_standard_A2(core,
EN_A2_FORCE_STEREO);
break;
}
}
}
break;
case WW_FM:
switch (mode) {
case V4L2_TUNER_MODE_MONO:
ctl = EN_FMRADIO_FORCE_MONO;
mask = 0x3f;
break;
case V4L2_TUNER_MODE_STEREO:
ctl = EN_FMRADIO_AUTO_STEREO;
mask = 0x3f;
break;
}
break;
}
if (UNSET != ctl) {
dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
"[status=0x%x,ctl=0x%x,vol=0x%x]\n",
mask, ctl, cx_read(AUD_STATUS),
cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
cx_andor(AUD_CTL, mask, ctl);
}
return;
}
int cx88_audio_thread(void *data)
{
struct cx88_core *core = data;
struct v4l2_tuner t;
u32 mode = 0;
dprintk("cx88: tvaudio thread started\n");
set_freezable();
for (;;) {
msleep_interruptible(1000);
if (kthread_should_stop())
break;
try_to_freeze();
/* just monitor the audio status for now ... */
memset(&t, 0, sizeof(t));
cx88_get_stereo(core, &t);
if (UNSET != core->audiomode_manual)
/* manually set, don't do anything. */
continue;
/* monitor signal */
if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
mode = V4L2_TUNER_MODE_STEREO;
else
mode = V4L2_TUNER_MODE_MONO;
if (mode == core->audiomode_current)
continue;
/* automatically switch to best available mode */
cx88_set_stereo(core, mode, 0);
}
dprintk("cx88: tvaudio thread exiting\n");
return 0;
}
/* ----------------------------------------------------------- */
EXPORT_SYMBOL(cx88_set_tvaudio);
EXPORT_SYMBOL(cx88_newstation);
EXPORT_SYMBOL(cx88_set_stereo);
EXPORT_SYMBOL(cx88_get_stereo);
EXPORT_SYMBOL(cx88_audio_thread);
/*
* Local variables:
* c-basic-offset: 8
* End:
* kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
*/
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